| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.34 | 3.30 | 0.04 |
| Feb | 2.78 | 2.75 | 0.03 |
| Mar | 3.90 | 3.78 | 0.12 |
| Apr | 3.39 | 3.33 | 0.06 |
| May | 4.14 | 4.15 | -0.01 |
| Jun | 4.25 | 4.08 | 0.17 |
| Jul | 4.34 | 4.32 | 0.02 |
| Aug | 4.31 | 4.40 | -0.09 |
| Sep | 4.46 | 4.12 | 0.34 |
| Oct | 3.71 | 3.62 | 0.09 |
| Nov | 3.32 | 3.28 | 0.04 |
| Dec | 3.59 | 3.73 | -0.14 |
45.53 | 44.86 | 0.67 |